diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-02-25 23:16:14 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:14:46 +0200 |
| commit | 9d06c4027f21fcfa60221bd7203eda3c82568467 (patch) | |
| tree | 450855df4bb92d85befbcb56a7d96047df2f3072 /arch/x86/kernel/traps.c | |
| parent | 218e31b6e7a33c9b5e5d608aa79d51665bb84e62 (diff) | |
x86/entry: Convert Divide Error to IDTENTRY
Convert #DE to IDTENTRY:
- Implement the C entry point with DEFINE_IDTENTRY
- Emit the ASM stub with DECLARE_IDTENTRY
- Remove the ASM idtentry in 64bit
- Remove the open coded ASM entry code in 32bit
- Fixup the XEN/PV code
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20200505134904.663914713@linutronix.de
Diffstat (limited to 'arch/x86/kernel/traps.c')
| -rw-r--r-- | arch/x86/kernel/traps.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 3857c0fd3306..37092f74ec42 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -220,6 +220,12 @@ static __always_inline void __user *error_get_trap_addr(struct pt_regs *regs) return (void __user *)uprobe_get_trap_addr(regs); } +DEFINE_IDTENTRY(exc_divide_error) +{ + do_error_trap(regs, 0, "divide_error", X86_TRAP_DE, SIGFPE, + FPE_INTDIV, error_get_trap_addr(regs)); +} + #define IP ((void __user *)uprobe_get_trap_addr(regs)) #define DO_ERROR(trapnr, signr, sicode, addr, str, name) \ dotraplinkage void do_##name(struct pt_regs *regs, long error_code) \ @@ -227,7 +233,6 @@ dotraplinkage void do_##name(struct pt_regs *regs, long error_code) \ do_error_trap(regs, error_code, str, trapnr, signr, sicode, addr); \ } -DO_ERROR(X86_TRAP_DE, SIGFPE, FPE_INTDIV, IP, "divide error", divide_error) DO_ERROR(X86_TRAP_OF, SIGSEGV, 0, NULL, "overflow", overflow) DO_ERROR(X86_TRAP_UD, SIGILL, ILL_ILLOPN, IP, "invalid opcode", invalid_op) DO_ERROR(X86_TRAP_OLD_MF, SIGFPE, 0, NULL, "coprocessor segment overrun", coprocessor_segment_overrun) |